Influence of mulch and poultry manure application on soil temperature,evapotranspiration and water use efficiency of dry season cultivated okra  

作　　者：Mutiu Abolanle Busarit Ganiyu Olawale Bankole Idris Adebanjo Adiamo Rasaq Olayiwola Abiodun Olanrewaju Hammed Ologunde 

机构地区：[1]Department of Soil Science and Land Management,Federal University of Agriculture,Abeokuta,PM.B,2240,Abeokuta,Nigeria

出　　处：《International Soil and Water Conservation Research》2023年第2期382-392,共11页国际水土保持研究（英文）

摘　　要：Sustainable vegetable production especially during the dry season requires adequate conservation of soil water.This study was conducted to evaluate the sole and interactive effects of mulching(M)and poultry manure(PM)application on soil temperature(ST),crop evapotranspiration(ETc)and water use efficiency(WUE)of okra.The experiment was a Randomized Complete Block Design(RCBD)with three replicates.The treatments were M at 0 and 6t ha^(-1)and PM at 0,10 and 20t ha^(-1).Soil temperature was measured using digital thermometer while ETc was determined by water depletion method using a Time Domain Reflectometer.Irrigation at field capacity was applied manually at 2-day intervals.Independent appli-cation of mulch significantly lowered ST while joint application of 20t ha^(-1)PM(PM20)and M signifi-cantly(p≤0.05)reduced ST at 5 cm and 10 cm soil depth compared with the unmulched plots in both seasons.Application of 10t ha^(-1)PM(PM10)without M recorded the highest ETc(43.7 mm),while joint application of PM20 and M reduced ETc by about 93%compared with PM10 only.Okra used water most efficiently when PM20 was applied under mulched plot.There was 62.2%increase in WUE under mulched plots compared with the control while the residual effect of PM10 and M significantly increased WUE by 65.5%.It was evident that M alongside application of PM is a good strategy for regulating ST,moderating ETc and increasing okra WUE,especially during dry season farming.

关 键 词：EVAPOTRANSPIRATION Soil temperature Volumetric water content Water depletion method Water use efficiency 

分 类 号：S157[农业科学—土壤学]