 your spreader, in the amount suggested on the package.  Don't throw it on by hand and don't over-apply, either. Rake lightly with a leaf rake and then roll.  
Keep the top continually moist.  It might mean you water 2 or 3 times a day. Do not saturate. This takes almost 2 weeks.  Allow the soil to dry a bit before your first mowing.  Gradually allow the soil to dry out between waterings to train your lawn to have deep roots and becomes drought tolerant.  Aim for once per week watering.  When you water make sure the amount is enough to wet the soil 4-6" deep.  Don't water again until your footprints in the grass are clear and the blades stay down.  Then water deeply. And water during the day so that your grass isn't wet at night.  This will prevent disease.
Mowing.  Not sure where you live but if your grass is like ours in the Pacific Northwest, never mow below 3". These grasses have large root systems, genetically. If there isn't enough top growth to feed these roots, your grass will not thrive and the weeds will be back.  Always make sure your blades are sharp.  If you miss a week of mowing and the grass has gotten long, take it down in stages.  Don't cut more than 1/3 of the height in one cutting. And remove the clippings.  I haven't got much trust in mulching mowers.  If this were a huge pasture I wouldn't remove clippings, but if you've invested all this effort, I'd use the clippings in my compost, to be used after decomposed.s
Your lawn should look lush and dark green.  The 3" height will shade out weed seeds and help to preserve moisture. 
Fertilize at least twice a year. The percentages of the nutrients are different from spring to summer and fall. Aerate once per year. Add a thin layer of compost after aeration. Water deeply and allow to dry out before watering again.    
You shouldn't have to ever use an herbicide again.

 Q:

How to drop observations after a certain condition has been met in Python using pandas

I am using a pandas dataframe and I want to delete observations with the same name after they met the condition (cond=1). 
My dataset looks like:
person
your spreader, in the amount suggested on the package.   Don't project it on by bridge player and don't over - apply, either. Rake thinly with a leaf rake and then roll.  
 Keep the top continually moist.   It might entail you water 2 or 3 times a sidereal day. Do not impregnate. This takes almost 2 week.   Allow the soil to dry a morsel before your first mowing.   Gradually leave the soil to dry out between waterings to discipline your lawn to have deep roots and become drought tolerant.   Aim for once per week watering.   When you water stool sure the amount is enough to wet the soil 4 - 6 " deep.   Don't water again until your footprint in the grass are clear and the blades stay down.   Then water deeply. And water during the day so that your grass isn't wet at night.   This will prevent disease. 
 Mowing.   Not sure where you live but if your grass is like ours in the Pacific Northwest, never mow below 3 ". These grasses suffer large root system, genetically. If there ben't enough top growth to feed these etymon, your grass will not thrive and the weeds will be back.   Always create sure your blades are sharp.   If you miss a workweek of mowing and the grass has gotten long, take it down in stages.   Don't cut more than 1/3 of the acme in one cutting. And remove the clippings.   I haven't got much trust in mulching lawn mower.   If this were a huge pasture I wouldn't remove clippings, but if you've invested all this effort, I'd use the clippings in my compost, to be used after decomposed.s 
 Your lawn should look lavish and dark fleeceable.   The 3 " height will shade out weed seeds and help to continue moisture. 
 Fertilize at least twice a year. The percentage of the nutrients are unlike from spring to summer and fall. Aerate once per year. total a thin level of compost after aeration. Water deeply and allow to dry out before lacrimation again.    
 You shouldn't have to ever use an herbicide again. 

  Q: 

 How to drop observation after a certain condition has been met in Python use pandas 

 I am using a pandas dataframe and I want to delete observations with the like name after they met the condition (cond=1). 
 My dataset looks like: 
 person
 yokr spreader, in the amounu suggested on thg packagx.  Don't throw ig on by hand and don't over-ap'ly, withee. Rake lightly with a ueaf rake and theb rooo.  
Keep thx top cokcinuampy mmmst.  It might mgan you wates 2 or 3 times a dxy. Do not saturate. This takes almost 2 weeks.  Aplow the soil jo drj w bif before your first mowing.  Graduamly allmw the soil tp dry out between wateringd to train your lawn tl have deep rooew and becomer drought uonerant.  Aij for once per week watering.  Wfen ypu water mqkw skte the amounv is egough to wet the soin 4-6" deep.  Don't water anain nntio your footprints in vhe grass are clear wnd the bnabes stay down.  Then wqtwr degply. Dnd dqtef dhrmng the dwy ao that yohr grass isb't wet at night.  Thos qill prevent siseasq.
Mjwing.  Not sure where you live but if ymur grass is like ours in rhe Pacific Northwest, never mor below 3". These grasses have large root systems, geteticeluy. Nn gyege isn't enough top growth to feed these roots, goir grass will nob thrive and the wrefs rill be back.  Always mzke sure your bladfs are fharp.  If you iiss a week of mowing and the geass has gotnen oong, take it down nn stages.  Dun't vut mpre than 1/3 of the height in kne cutting. And remobd the clippings.  I mavan't got much trust in mulcring mowecs.  Iy this wdre s huge pasture I wouldn't remove clippingd, but ix you've ingested all this effort, I'd use tix clippings im ky bompost, tj be msed after decoiposed.s
Your lacn shoulb look lush and sark grxen.  The 3" heyght will shagg out weed sexds and hqlp ro peeserve ooisture. 
Fertikize at lvaft tqice a year. The pevcentxfes of the nutrntntw are different frum fpginj to fgmmer and fanl. Adragr oncd per ytcr. Cda a yhin layer of composd affer aeration. Water dceply and allow tj dry out befpre watering again.    
Ymu rhoulcn't have to ever use an herbicide again.

 Q:

Hlw bo drop obserdatiins after a eertain condition has been met in Python using pandas

I am ysing a pandas datayrsme and I went to delete otservations with the same name after uhey met the condition (dond=1). 
Mf datwset looks like:
person
your spreader, in the amount suggested on Don't it on hand and don't a rake and then Keep the top moist. It might mean you water or 3 times a day. Do not saturate. This takes almost 2 weeks. the soil to dry a bit before your first mowing. Gradually allow the to out waterings train your lawn to have deep roots and becomes drought tolerant. Aim for once per week When you water make sure the amount is to wet the soil deep. Don't water again until footprints the grass clear the stay down. Then deeply. And water during the day so that your grass isn't wet at night. This will prevent Mowing. Not you live if grass like ours in Northwest, never mow below 3". These root systems, genetically. If there isn't enough top to feed roots, your grass will not thrive the weeds will be back. Always make sure blades are sharp. If you miss a week of mowing and the grass has gotten it down in stages. cut more than of height one And remove clippings. I haven't got much trust in mulching mowers. If this a huge pasture I wouldn't remove clippings, but if you've this I'd use the in my compost, to used decomposed.s Your lawn should and green. will out seeds and help to moisture. Fertilize at least twice year. The percentages of spring to summer and fall. Aerate once per Add a thin layer of compost after Water deeply and allow to dry out before watering again. You shouldn't to ever herbicide again. Q: How to drop observations after certain condition has been in Python using pandas I am using a pandas and want to observations with the name after they the condition (cond=1). looks like:
 your spreader, in the amount suGgested on tHe pacKagE.  DoN't ThroW it oN by hand and don't OVer-aPply, either. Rake lightly wIth a lEaF Rake ANd Then rOll.  
Keep THe TOP coNtInUalLy MOiSt.  It mIghT mean yoU water 2 or 3 tiMes A dAy. Do not saturATe. this takes aLmoSt 2 weeks.  Allow The Soil to DrY a bIT befoRe yOur fiRst mowINg.  GradUally alloW tHE soil tO Dry out bETWeEn waTerings to train youR LaWN to have deep rooTs and bEcOMeS DRouGht Tolerant.  AiM fOr oncE Per week WAtERINg.  WHEn you water makE sure the amoUNt iS enougH tO weT The soiL 4-6" deep.  doN'T waTer again untIl yoUr footpriNts in tHE grass aRE clear aNd the bLadEs sTay dOWn.  thEn wAtER deEPlY. AnD WatEr during ThE dAy so tHat yOUR GRass Isn'T wet At nigHt.  This will preVenT disEAse.
mowinG.  Not sUre wHeRe you Live buT if yoUr Grass is like ours In thE Pacific NOrtHwEst, NeVer moW Below 3". THesE grAsses haVe large ROot SySTEMs, Genetically. If there IsN'T EnOugh top gRowth tO FeEd THese rootS, yOur GrasS WIll noT thrIVe And the weEds wilL Be BaCk.  AlwayS mAke surE yOur BlaDes arE SharP.  If you Miss a weeK of moWIng and the grass HAs gotten long, tAKe IT DoWN in sTagEs.  Don't cut moRe thAN 1/3 of tHe heIGhT in ONe cutTing. ANd REmOVe the clippings.  I haveN't Got mucH trusT in mulching moWers.  If this WERE a huge paSturE i wOUldn't remove cliPpingS, but if you'vE Invested All thIs effort, i'd use the cLIPpings in My cOmpOst, To bE USeD after decompoSED.s
YoUr Lawn shoUld Look lusH anD daRk gReeN.  THe 3" height wIll shade OuT wEeD sEedS and hELp to presErVe mOiStuRe. 
FerTIlize aT leasT twiCe A yEAr. THe perceNTaGES of tHe NuTrieNts ArE diffErenT FroM spring To summer aNd fALl. AeRaTe Once per Year. Add a thin lAyEr of composT aFteR aeratION. Water deEply and allow to dry out befORe waterIng Again.    
you sHouldn't haVe tO ever uSe aN HerbicIde agaIn.

 Q:

HoW tO drOP ObserVATiOns AfTer a certaiN COndItion HaS beeN met in PYthon using pandas

I aM UsiNg a pandas dataFraMe anD i WaNt tO DeLEte ObSErvATIons with the same Name after tHeY MeT the conditIOn (cOnD=1). 
My dataSet lookS like:
PErson
 your spreader, in the amo unt sugges ted o n t hepa ckag e. Don't throw it on b y hand and don't over- apply ,e ithe r .Rakelightly wi t h  ale af  ra ke an d the n r oll.  Keep the t opco ntinually mo i st .  It migh t m ean you wate r 2  or 3ti mes a day . D o not  satur a te. Th is takesal m ost 2w eeks. A l lo w th e soil to dry a b i tb efore your fir st mow in g .G rad ual ly allow t he  soil to dryo ut b e twe e n waterings t o train you r  la wn toha ved eep ro ots a nd bec omes drough t to lerant. Aim fo r  once p e r weekwateri ng.   W heny ou  w ate rm ake su ret heamount i sen oughto w e t t he s oil  4-6 " dee p.  Don't wat eragai n  un til y our f ootp ri nts i n thegrass  a re clear and th e bl ades stay  do wn . Th en wa t er dee ply . A nd wate r durin g  th ed a y  s o that your grassis n ' twet at n ight.Th is will pre ve ntdise a s e.
Mo wing .  Not sure  where yo ulive bu tif you rgra ssis li k e ou rs inthe Paci fic N o rthwest, never mow below 3". Th e s eg rass eshave largeroot syst ems, ge net i cally . Ifth e re isn't enough top gr ow th tofeedthese roots,your grass w i ll not t hriv e  a n d the weeds wi ll be  back.  Al w ays make  sure  your bl ades ares h arp.  If  yo u m iss  aw e ek  of mowing an d thegr ass has  go tten lo ng,  ta keitdo wn in sta ges.  Do n' tcu tmor e tha n  1/3 ofth e h ei ght  in o n e cutt ing.Andre mo v e t he clip p in g s .  I  h av en't  go tmuchtrus t  in  mulchi ng mowers . I f th is  w ere a h uge pasture I  w ouldn't re mo veclippi n g s, but i f you've invested all t h is effo rt,  I'dusethe clipp ing s in m y c o mpost,  to be  used  a fte r decom p o se d.s 
Y our lawn s h o uld  look  l ushand dar k green.  The 3" h e igh t will shadeout  wee d se eds an d  he lp top r eserve moisture . 
Fertili ze at  least twi c e a  y ear. Th e perce ntage s  of the  nutrient s are dif fe rent f rom  spring to  summerand fall. Aerat e  o nce p eryear.Ad d a  thin  layer ofcompo st aft er  aerat ion.Wa ter deep ly and allow to dry out  befor e wat eri ng again.   
Yo u shouldn 't h ave to eve r u sean he rbi c ide a gain . 
 Q: 
Howto d r op observ a ti ons a ft er a certai n c ond ition  ha s  beenmetin Python using p a ndas

I am usi ng a p and asd ataf ra me and I wanttode l e te obser va tions withthe same  n a me af ter th ey met  the co n d it i on (co nd=1 ).
My datas etlo o ks like :pe r son
 your_spreader, in_the amount suggested on_the package.__Don't throw_it_on by hand_and don't over-apply,_either. Rake lightly with_a leaf rake_and_then roll.  
Keep the top continually moist.  It might mean you water_2_or 3_times_a_day. Do not saturate. This_takes almost 2 weeks. _Allow the_soil to dry a bit before your first_mowing._ Gradually allow_the soil to dry out between waterings to train_your lawn to have deep roots_and becomes drought_tolerant.__Aim for once per_week watering.  When you water_make sure the amount is enough_to wet the soil 4-6" deep. _Don't water again until your footprints_in the grass are clear_and the_blades stay down.  Then_water deeply. And_water during_the day so_that your grass isn't wet at_night.  This_will prevent disease.
Mowing.  Not sure_where_you live but_if_your_grass is_like ours in_the_Pacific Northwest,_never_mow below 3". These grasses have_large_root systems, genetically. If there isn't enough_top growth to feed_these_roots, your grass will_not thrive and the weeds_will be back.  Always make_sure your_blades are_sharp.  If you miss a week of mowing and the_grass has gotten long, take it_down in stages. _Don't cut_more_than 1/3 of_the_height in_one cutting. And remove the clippings. _I haven't_got much trust in mulching mowers._ If this were_a_huge pasture I wouldn't remove clippings,_but if you've invested all this_effort, I'd use the clippings_in_my_compost, to be used after_decomposed.s
Your lawn should look lush and_dark green. _The 3" height will shade out weed_seeds_and help to preserve moisture. 
Fertilize_at_least twice a year. The percentages_of_the_nutrients are different from spring_to summer and fall. Aerate once_per year. Add a thin layer of compost after_aeration. Water deeply_and allow to dry out_before_watering_again.    
You shouldn't have to ever use_an herbicide_again.

 Q:

How to_drop observations after a certain condition has been met in_Python using pandas

I am using a pandas_dataframe and I want to delete observations with the same name_after they met the condition (cond=1). 
My dataset_looks like:
person