Abstract
This investigation studied the effects of foliar sprays of urea (0.5%), a mixture of Zn (0.4%), Mn (0.3%), Fe (0.5%), and Cu (0.3%) in sulfates from 23% Zn, 28% Mn, 19% Fe, and 30% Cu, respectively, and two growth regulators (GA 3 at 25 ppm and α-NAA at 10 ppm), as well as number and date of sprays, on the number of fruit/tree, average fruit weight, and yield/tree in kilograms. Spraying `Washington' navel orange trees with urea and/or micronutrients significantly increased the number of fruit/tree, average fruit weight, and yield/tree expressed in kilograms. However, the treatment including both of them was the most effective in 1991–92 and 1992–93. Application of GA 3 and NAA effectively increased the value of the three traits compared with the control; however, spraying the trees with NAA was responsible for higher fruit numbers, while GA 3 was more effective in increasing fruit weight. Two sprays of urea, micronutrients, and NAA (or GA 3 ), the first applied 3 weeks before flowering and the second 4 weeks after fruit set, were more effective than spraying once at any of the two dates in producing high numbers of fruit/tree, average fruit weight and yield per tree by weight.
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Claims 9
Claim · model-written summary
Urea or micronutrients increased fruit number.
- Taxon
- `Washington' navel orange treese0
- Treatment
- urea and/or micronutrientse0
- Outcome
- number of fruit/treee0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Spraying `Washington' navel orange trees with urea and/or micronutrients significantly increased the number of fruit/tree”
Claim · model-written summary
Urea or micronutrients increased fruit weight.
- Taxon
- `Washington' navel orange treese0
- Treatment
- urea and/or micronutrientse0
- Outcome
- average fruit weighte0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Spraying `Washington' navel orange trees with urea and/or micronutrients significantly increased the number of fruit/tree, average fruit weight”
Claim · model-written summary
Urea or micronutrients increased yield per tree.
- Taxon
- `Washington' navel orange treese0
- Treatment
- urea and/or micronutrientse0
- Outcome
- yield/tree expressed in kilogramse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Spraying `Washington' navel orange trees with urea and/or micronutrients significantly increased the number of fruit/tree, average fruit weight, and yield/tree expressed in kilograms”
Claim · model-written summary
The combined nutrient treatment was most effective in both seasons.
Verbatim
e0“the treatment including both of them was the most effective in 1991–92 and 1992–93”
t0“Orange Trees”
Claim · model-written summary
GA 3 increased the three yield traits compared with control.
Verbatim
e0“Application of GA 3 and NAA effectively increased the value of the three traits compared with the control”
t0“Orange Trees”
Claim · model-written summary
NAA increased the three yield traits compared with control.
Verbatim
e0“Application of GA 3 and NAA effectively increased the value of the three traits compared with the control”
t0“Orange Trees”
Claim · model-written summary
NAA produced higher fruit numbers.
Verbatim
e0“spraying the trees with NAA was responsible for higher fruit numbers”
t0“Orange Trees”
Claim · model-written summary
GA 3 increased fruit weight more effectively.
Verbatim
e0“GA 3 was more effective in increasing fruit weight”
t0“Orange Trees”
Claim · model-written summary
Two sprays improved fruit number, weight and yield over one spray.
Verbatim
e0“Two sprays of urea, micronutrients, and NAA (or GA 3 ), the first applied 3 weeks before flowering and the second 4 weeks after fruit set, were more effective than spraying once at any of the two dates in producing high numbers of fruit/tree, average fruit weight and yield per tree by weight”
t0“Orange Trees”
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