Sorghum Responses to Foliar Spraying With Zinc under Water Regime Stress

There were analyzed and disclosed the basic components of arable farming systems and their Meaning, the current state and scientific principles in the context of the further development of field crop cultivation in the conditions of Western Forest-Steppe. The purpose of research. To study an effect of alternation of crop in crop rotation in conditions of brief rotation on the soil water regime, productivity and economic efficiency. Methods. Field, laboratory, comparative and analytical. Results. The results of researches on study of productivity of four-field crop rotations with short rotation depending on their saturation by the grain and tilled cultures, of various use of mineral fertilizers, green manure crops and collateral products which were conducted during 2014-2015 in the stationary experiment of the scientific and technological department of plant growing and arable farming, of the TDSGDS of the IKSGP of NAAN are resulted In the article. The elements of the biologization of farming are the basis of our development of crop rotations with short rotation. The study of the effect of green manure crops and collateral products in four-field crop rotations with a different set of crops on the change of soil fertility and productivity of crop rotations as a whole was carried out to this purpose. According to the results of the research, is provided the information on the effectiveness of improving the field crop rotations with short rotation with varying degrees of saturation by grain and tilled crops, that ensure the production of environmentally friendly products, reducing the cost of grain, improving the quality of marketable products. The study of the effect of alternation of crop in crop rotation in conditions of brief rotation on the soil water regime, productivity and economic efficiency showed that an increase in crop rotation productivity is observed in short-rotation crop rotations, if they are saturated by grain crops up to 100%, cereals crops reduction to 50% in crop rotations contributes to a decrease in crop productivity. Conclusion. Thus, the results of the research showed that with the correct construction of short rotational crop rotations, such problems as rational use of nutrients and soil moisture, control of weeds and pests of agricultural crops, improvement of the physical and chemical properties of the soil, increased efficiency in the use of fertilizers and equipment, Cheapening of the received agricultural product may be solved.

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Soil Water Depletion by Irrigated Cotton as Influenced by Water Regime and Stage of Plant Development 1

Agronomy Journal ◽

10.2134/agronj1963.00021962005500040024x ◽

1963 ◽

Vol 55 (4) ◽

pp. 376-379 ◽

Cited By ~ 4

Author(s):

M. Amemiya ◽

L. N. Namken ◽

C. J. Gerard

Keyword(s):

Soil Water ◽

Plant Development ◽

Water Regime ◽

Soil Water Depletion ◽

Water Depletion

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The Influence of Water Regime on the Performance of Aquatic Plants

Water Science & Technology ◽

10.2166/wst.1994.0174 ◽

1994 ◽

Vol 29 (4) ◽

pp. 127-132 ◽

Cited By ~ 6

Author(s):

Naomi Rea ◽

George G. Ganf

Keyword(s):

Deep Water ◽

Aquatic Plants ◽

Water Regime ◽

Optimal Performance ◽

Experimental Results ◽

The Other ◽

Full Potential ◽

Influence Of Water ◽

Emergent Species

Experimental results demonstrate bow small differences in depth and water regime have a significant affect on the accumulation and allocation of nutrients and biomass. Because the performance of aquatic plants depends on these factors, an understanding of their influence is essential to ensure that systems function at their full potential. The responses differed for two emergent species, indicating that within this morphological category, optimal performance will fall at different locations across a depth or water regime gradient. The performance of one species was unaffected by growth in mixture, whereas the other performed better in deep water and worse in shallow.

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Establishment of Three Emergent Macrophytes Under Different Water Regimes

Water Science & Technology ◽

10.2166/wst.1999.0167 ◽

1999 ◽

Vol 40 (3) ◽

pp. 233-240 ◽

Cited By ~ 1

Author(s):

S. G. T. Giovannini ◽

D. M. L. da Motta Marques

Keyword(s):

Water Level ◽

Aquatic Macrophytes ◽

Water Regime ◽

Emergent Macrophytes ◽

Morphological Response ◽

Water Regimes ◽

Wetland Construction ◽

Scirpus Californicus ◽

Level 3 ◽

Plot Design

The behavior of three emergent aquatic macrophytes under different water regimes was studied with the aim of achieving reconvertion of degraded wetlands and wetland construction for water quality improvement. Scirpus californicus, Typha subulata and Zizaniopsis bonariensis establishment was evaluated under a split plot design, in a factorial experiment with three levels of a water regime factor over a subsoil substratum. The stagnant 10±2 cm water level was best suited to T. subulata and Z. bonariensis development and S. californicus developed better at oscillating water level (3±2 cm) with flooding at 48 hour intervals. The morphological response variables (thickness and width at half length of the tallest leaf or stem per plant, height of tallest leaf or stem per plant, number of green leaves or stems and number of shoots per plant, and survival of propagules' original leaves or stems) were satisfactory descriptors to differentiate (p<0.1%) growth of above ground parts as related to water regimes and species. The three species did survive satisfactory in subsoil-like substratum under the tested water regimes. Mortality was in the worse case, 17.2%, 36.7%, and 9.4% for S. californicus, T. subulata, and Z. bonariensis, respectively. Although Z. bonariensis growth was very poor, only S. californicus and T. subulata could be indicated for planting under similar limiting conditions.

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Genetic loci regulating cadmium content in rice grains

Euphytica ◽

10.1007/s10681-020-02752-1 ◽

2021 ◽

Vol 217 (3) ◽

Author(s):

Gareth J. Norton ◽

Anthony Travis ◽

Panthita Ruang-areerate ◽

Graeme W. Nicol ◽

Ayotunde A. Adeosun ◽

...

Keyword(s):

Water Treatment ◽

Water Regime ◽

Field Experiments ◽

Cadmium Concentration ◽

Chromosome 9 ◽

Chromosome 7 ◽

Cadmium Content ◽

Rice Grains ◽

Water Treatments ◽

Grain Cadmium

AbstractIt has been estimated that up to 90% of human exposure to cadmium is through food, and that cadmium within rice grains can be a major contributor to that dietary source. In this study genome wide association mapping was conducted on the Bengal and Assam Aus Panel (BAAP) of rice to identify quantitative trait loci and candidate genes for lowering grain cadmium. Field experiments were conducted over two years under two different irrigation systems: continually flooded and alternate wetting and drying (AWD). There was significant effects of water treatment, genotype, and genotype by water treatment interaction. Importantly, AWD increased grain cadmium, on average, by 49.6% and 108.8% in year 1 and 2 respectively. There was between 4.6 and 28 fold variation in cadmium concentration. A total of 58 QTLs were detected but no loci are clearly specific to one water regime despite approximately 20% of variation attributable to genotype by water regime interaction. A number of QTLs were consistent across most water treatments and years. These included QTLs on chromosome 7 (7.23–7.61, 8.93–9.04, and 29.12–29.14 Mbp), chromosome 5 (8.66–8.72 Mbp), and chromosome 9 (11.46–11.64 Mbp). Further analysis of the loci on chromosome 7 (8.93–9.04 Mbp), identified the candidate gene OsNRAMP1, where cultivars with a deletion upstream of the gene had higher concentrations of cadmium compared to the cultivars that did not have the deletion. The distribution of alleles within the BAAP suggest this QTL is easily detected in this population because it is composed of aus cultivars. Local genome cluster analysis suggest high Cd alleles are uncommon, but should be avoided in breeding.

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