Improving nutrient and water use efficiencies using water-drip irrigation and fertilization technology in Northeast China

AbstractThe effects of the amount and timing of regulated deficit drip irrigation under plastic film on potato (‘Qingshu 168’) growth, photosynthesis, yield, water use efficiency, and quality were examined from 2017 to 2019 in cold and arid northwestern China. In the four stages of potato growth (seedling, tuber initiation, tuber bulking, starch accumulation), eight treatments were designed, with a mild deficit was in treatments WD1 (seedling), WD2 (tuber initiation), WD3 (tuber bulking), and WD4 (starch accumulation); and a moderate deficit in WD5 (seedling), WD6 (tuber initiation), WD7 (tuber bulking), and WD8 (starch accumulation). The net photosynthetic rate, stomatal conductance, and transpiration rate decreased significantly under water deficit in the tuber formation and starch accumulation stages. Although water deficit reduced potato yields, a mild deficit in the seedling stage resulted in the highest yield and water use efficiency at 43,961.91 kg ha−1 and 8.67 kg m−3, respectively. The highest overall quality was in potatoes subjected to mild and moderate water deficit in the seedling stage. Principal component analysis identified mild water stress in the seedling stage as the optimum regulated deficit irrigation regime. The results of this study provide theoretical and technical references for efficient water-saving cultivation and industrialization of potato in northwestern China.

Download Full-text

Effects of the substituted A and B chromosomes of Triticum dicoccoides on the nitrogen, phosphorus and water use efficiencies in the ‘Langdon’ durum wheat (T. turgidum L. var. durum)

Cereal Research Communications ◽

10.1007/bf03543607 ◽

2000 ◽

Vol 28 (3) ◽

pp. 293-298 ◽

Cited By ~ 2

Author(s):

A. G. Górny

Keyword(s):

Durum Wheat ◽

Water Use ◽

Triticum Dicoccoides ◽

B Chromosomes ◽

Water Use Efficiencies ◽

Nitrogen Phosphorus

Download Full-text

Yield and water use efficiencies of maize and cowpea as affected by tillage and cropping systems in semi-arid Eastern Kenya

Agricultural Water Management ◽

10.1016/j.agwat.2012.09.002 ◽

2012 ◽

Vol 115 ◽

pp. 148-155 ◽

Cited By ~ 26

Author(s):

J.M. Miriti ◽

G. Kironchi ◽

A.O. Esilaba ◽

L.K. Heng ◽

C.K.K. Gachene ◽

...

Keyword(s):

Water Use ◽

Cropping Systems ◽

Water Use Efficiencies ◽

Semi Arid

Download Full-text

Water Use Efficiencies of Different Maturity Group Soybean Cultivars in the Humid Mississippi Delta

Water ◽

10.3390/w13111496 ◽

2021 ◽

Vol 13 (11) ◽

pp. 1496

Author(s):

Srinivasa R. Pinnamaneni ◽

Saseendran S. Anapalli ◽

Daniel K. Fisher ◽

Krishna N. Reddy

Keyword(s):

Glycine Max ◽

Water Resources ◽

Experimental Design ◽

Grain Yield ◽

Water Use ◽

Production System ◽

Mississippi Delta ◽

Maturity Group ◽

Glycine Max L ◽

Water Use Efficiencies

Introducing alternative cultivars with enhanced water use efficiencies can help alleviate pressure on groundwater for crop irrigations in Mississippi (MS) Delta. A two-year field study was conducted in 2019–2020 to compare the water use efficiencies (WUE) of recently released and pre-released soybean {Glycine max (L.) Merr.} cultivars in maturity group (MG) III (‘P37A78’, ‘LG03-4561-14’), IV (‘Dyna-gro 4516x’, ‘DS25-1, DT97-4290’), and V (‘S12-1362’, ‘S14-16306’) in the MS Delta. The experimental design was a split-plot with cultivar as the first factor and the second factor was water variant irrigation (IR) and no irrigation (RF, rainfed), replicated three times. The MG IV cultivar Dyna-gro 4516x recorded the highest grain yield and WUE: grain yields were 4.58 Mg ha−1 and 3.89 Mg ha−1 under IR and RF, respectively in 2019, and 4.74 Mg ha−1 and 4.35 Mg ha−1 in 2020. The WUE were 7.2 and 6.9 kg ha−1 mm−1, respectively, in 2019 under IR and RF, and 13.4 and 16.9 kg ha−1 mm−1 in 2020. The data reveals that ‘Dyna-gro 4516x’ (MG IV), ‘LG03-4561-14’ (MG III), and ‘P37A78’ (MG III) are best adapted to the early soybean production system (ESPS) in MS Delta region for sustainable production for conserving water resources.

Download Full-text