Abstract
A field experiments was carried out at Sakha Agric. Res. Sta. Farm during two successive summer seasons (2002 and 2003) to study the effects of water regime, nitrogen fertilizer levels and zinc application on maize yield and its water relations as well as some soil chemical properties. Split-split plot design with four replicates was used, where 4 water regime treatments (40%, 55%, 70% and 85% depletion of available soil moisture) were occupied the main plots. Nitrogen fertilizer with three levels (90, 110 and 130 kg N red' ) were placed in the sub-plots and three zinc treatments (150 ppm zinc-EDTA chelate as a foliar spray application, 10 kg fed' Zn- sulfate as soil application and without zinc applied) were allocated to sub-sub-plots. The main results could be summarized as follows: - There was a significant effect of water regime on maize yield and its components. Irrigation at 55% depletion of available soil moisture (12) produced the highest maize yield and its components. While the irrigation at 85% depletion of available soil moisture (14) gave the lowest maize yield. Increasing nitrogen fertilization level up to 130 kg ted' highly Significantly increased maize yield and its components. The foliar application of zinc produced the higher maize yield than the SOil applied zinc. - The highest amount of irrigation water applied and water consumptive use (WCU) were obtained with irrigation at 40% depletion of available soil moisture. While the irrigation at 85% depletion of available soil moisture gave the highest values of crop water use efficiency (CWUE). - Soil salinity (ECe), soluble ions and SAR were decreased with increasing the amount of irrigation water applied. On the other hand, decreasing the amount of irrigation water applied (14 Treat.) led to salts accumulation in the soil profile during both seasons. Generally, it could be concluded that increasing nitrogen fertilization level up to 130 kg tee" and irrigation at 55% depletion of available soil moisture with 150 ppm foliar spray of zinc gave the highest maize yield and its components
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Claims 10
Claim · model-written summary
Irrigation regime significantly affected maize yield and components.
Zea maysNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant effect of water regime on maize yield and its components.”
Claim · model-written summary
Irrigation at 55% moisture depletion produced the highest maize yield and components.
- Treatment
- 55% depletion of available soil moisturee0
- Outcome
- highest maize yield and its componentse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation at 55% depletion of available soil moisture (12) produced the highest maize yield and its components.”
Claim · model-written summary
Irrigation at 85% depletion gave the lowest maize yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the irrigation at 85% depletion of available soil moisture (14) gave the lowest maize yield.”
Claim · model-written summary
Increasing nitrogen up to 130 kg increased maize yield and components significantly.
- Treatment
- nitrogen fertilization level up to 130 kg ted'e0
- Outcome
- maize yield and its componentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing nitrogen fertilization level up to 130 kg ted' highly Significantly increased maize yield and its components.”
Claim · model-written summary
Foliar zinc produced higher maize yield than soil zinc.
- Treatment
- foliar application of zince0
- Outcome
- maize yielde0
- Direction
- highere0
- Comparator
- SOil applied zince0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The foliar application of zinc produced the higher maize yield than the SOil applied zinc.”
Claim · model-written summary
Irrigation at 40% depletion had the highest irrigation water amount and WCU.
- Treatment
- irrigation at 40% depletion of available soil moisturee0
- Outcome
- water consumptive use (WCU)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest amount of irrigation water applied and water consumptive use (WCU) were obtained with irrigation at 40% depletion of available soil moisture.”
t0“MAIZE”
Claim · model-written summary
Irrigation at 85% depletion gave the highest crop water use efficiency.
- Treatment
- irrigation at 85% depletion of available soil moisturee0
- Outcome
- crop water use efficiency (CWUE)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the irrigation at 85% depletion of available soil moisture gave the highest values of crop water use efficiency (CWUE).”
t0“MAIZE”
Claim · model-written summary
Greater applied irrigation decreased soil salinity, soluble ions and SAR.
- Treatment
- increasing the amount of irrigation water appliede0
- Outcome
- Soil salinity (ECe), soluble ions and SARe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil salinity (ECe), soluble ions and SAR were decreased with increasing the amount of irrigation water applied.”
t0“MAIZE”
Claim · model-written summary
Reduced irrigation accumulated salts in the soil profile.
- Treatment
- decreasing the amount of irrigation water appliede0
- Outcome
- salts accumulation in the soil profilee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreasing the amount of irrigation water applied (14 Treat.) led to salts accumulation in the soil profile during both seasons.”
t0“MAIZE”
Claim · model-written summary
The highest maize yield resulted from 130 kg nitrogen, irrigation at 55% depletion and foliar zinc.
- Treatment
- irrigation at 55% depletion of available soil moisture with 150 ppm foliar spray of zince0
- Outcome
- highest maize yield and its componentse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing nitrogen fertilization level up to 130 kg tee" and irrigation at 55% depletion of available soil moisture with 150 ppm foliar spray of zinc gave the highest maize yield and its components”
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See all 1,016 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.