Abstract
Soil acidity and the associated low phosphorus availability and poor crop management practices are among the major factors constraining field pea productivity in the highlands of Ethiopia. The effect of phosphate fertilizer and weed control on yield and yield components of field pea (Pisum sativum L.) were studied on acidic Nitisols of farmers’ fields of Welmera Woreda, West Shoa. Factorial combinations of four levels of phosphate fertilizer (0, 10, 20 and 30 kg P ha-1) as triple super-phosphate (TSP) and two levels of weeding (w0 = no weeding and w1 = hand weeding once) were laid out in randomized complete block design with three replications. Results indicated that a highly significant positive response of plant height, number of pods per plant, total biomass and grain yields of field pea were noted to phosphate fertilizer and weeding treatments. Application of phosphate fertilizer at the rates of 10, 20 and 30 kg P ha-1 increased mean grain yields of field pea by 36, 67 and 57%, respectively compared to the control. Weeding once by hand increased mean grain yield of field pea by 15% compared to the unweeded check. The interaction between applied phosphate fertilizer and weed control (P×W) significantly affected field pea grain yield and total biomass. Grain yield was very significantly and positively correlated with plant height, number of pods per plant and total biomass (r = 0.59**, 0.68*** and 0.94***, respectively). The results of economic analysis indicated that the treatment with application of 20 kg P ha-1 and weeding once during the 4th week after sowing by hand was identified to be the best option with a marginal rate of return of 277%, well above the minimum acceptable rate of return of 100%, which is economically the most feasible alternative.
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Claims 11
Claim · model-written summary
Phosphate fertilizer and weeding increased field pea plant height and pods per plant.
- Taxon
- field peae0
- Treatment
- phosphate fertilizer and weeding treatmentse0
- Outcome
- plant height, number of pods per plante0
- Direction
- positive responsee0
Not reportedComparator
Verbatim
e0“a highly significant positive response of plant height, number of pods per plant, total biomass and grain yields of field pea were noted to phosphate fertilizer and weeding treatments”
Claim · model-written summary
Phosphate fertilizer and weeding increased field pea total biomass and grain yield.
- Taxon
- field peae0
- Treatment
- phosphate fertilizer and weeding treatmentse0
- Outcome
- total biomass and grain yieldse0
- Direction
- positive responsee0
Not reportedComparator
Verbatim
e0“a highly significant positive response of plant height, number of pods per plant, total biomass and grain yields of field pea were noted to phosphate fertilizer and weeding treatments”
Claim · model-written summary
10 kg P ha-1 raised mean field pea grain yield 36% versus control.
Verbatim
e0“Application of phosphate fertilizer at the rates of 10, 20 and 30 kg P ha-1 increased mean grain yields of field pea by 36, 67 and 57%, respectively compared to the control”
Claim · model-written summary
20 kg P ha-1 raised mean field pea grain yield 67% versus control.
Verbatim
e0“Application of phosphate fertilizer at the rates of 10, 20 and 30 kg P ha-1 increased mean grain yields of field pea by 36, 67 and 57%, respectively compared to the control”
Claim · model-written summary
30 kg P ha-1 raised mean field pea grain yield 57% versus control.
Verbatim
e0“Application of phosphate fertilizer at the rates of 10, 20 and 30 kg P ha-1 increased mean grain yields of field pea by 36, 67 and 57%, respectively compared to the control”
Claim · model-written summary
One hand weeding increased field pea grain yield 15% versus no weeding.
Verbatim
e0“Weeding once by hand increased mean grain yield of field pea by 15% compared to the unweeded check”
t0“field pea”
Claim · model-written summary
Phosphate fertilizer and weed control interacted significantly for field pea grain yield and biomass.
- Taxon
- field peae0
- Treatment
- applied phosphate fertilizer and weed control (P×W)e0
- Outcome
- grain yield and total biomasse0
Not reportedDirection
Verbatim
e0“The interaction between applied phosphate fertilizer and weed control (P×W) significantly affected field pea grain yield and total biomass”
Claim · model-written summary
Grain yield correlated positively with plant height at r = 0.59.
Verbatim
e0“Grain yield was very significantly and positively correlated with plant height, number of pods per plant and total biomass (r = 0.59**, 0.68*** and 0.94***, respectively)”
t0“field pea”
Claim · model-written summary
Grain yield correlated positively with pods per plant at r = 0.68.
Verbatim
e0“Grain yield was very significantly and positively correlated with plant height, number of pods per plant and total biomass (r = 0.59**, 0.68*** and 0.94***, respectively)”
t0“field pea”
Claim · model-written summary
Grain yield correlated positively with total biomass at r = 0.94.
Verbatim
e0“Grain yield was very significantly and positively correlated with plant height, number of pods per plant and total biomass (r = 0.59**, 0.68*** and 0.94***, respectively)”
t0“field pea”
Claim · model-written summary
20 kg P ha-1 plus hand weeding in week four had a 277% marginal return and was the most feasible option.
Verbatim
e0“application of 20 kg P ha-1 and weeding once during the 4th week after sowing by hand was identified to be the best option with a marginal rate of return of 277%, well above the minimum acceptable rate of return of 100%, which is economically the most feasible alternative”
t0“field pea”
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