scholarly journals Response of Cantaloupe Yield, Yield Components and Quality to Irrigation Rates and Soil Amendments Under Drip Irrigation in Calcareous Soils

2016 ◽  
Vol 7 (12) ◽  
pp. 887-893
Author(s):  
A. Abdel-Halim ◽  
M. Ramadan
Keyword(s):  
Drip Irrigation ◽  
Yield Components ◽  
Soil Amendments ◽  
Calcareous Soils

Effects of herbicide use, fungicide use and position in the field on the yield and yield components of spring barley

1992 ◽  
Vol 118 (1) ◽  
pp. 17-28 ◽  
Author(s):  
N. D. Boatman
Keyword(s):  
Yield Components ◽  
Flag Leaf ◽  
Spring Barley ◽  
Calcareous Soils ◽  
Grain Weight ◽  
Yield Response ◽  
Potential Yield ◽  
Effect On Yield ◽  
Herbicide Use ◽  
1000 Grain Weight

SUMMARYSix experiments were carried out over 2 years (1985 and 1986) in commercial spring barley crops on calcareous soils in Hampshire. Herbicides increased grain yield by 0·05–1·21 t/ha, and fungicides by 0·01–0·68 t/ha. Herbicide use affected each of the yield components ears/plant, grains/ear, 1000-grain weight and harvest index in one or more cases but the effects were not consistent between experiments or consistently related to yield increases. Fungicide use had little effect on yield components other than 1000-grain weight, which was significantly increased in all experiments. There were no significant herbicide × fungicide interactions. Large differences in yield were recorded between field edge (headland) and midfield plots, with headland plots outyielding the midfield in two of the three experiments where this effect was considered.The effects of fungicide use were accounted for by associated increases in the green lamina area of the flag leaf and second leaf at the late milk stage of grain development. This is consistent with previous work. Differences in yield response to herbicide between sites were linearly related both to weed numbers early in the season and to weed biomass at harvest. Weeds did not always directly replace crop biomass; in some experiments the combined dry matter production was greater when herbicide was not used. However, the results indicate that, where a diverse weed flora composed of species of moderate to low competitive ability is present, simple weed counts may provide a useful indication of potential yield loss.It is concluded that headland areas can often be as productive as the rest of the field, but a greater understanding of the factors involved is needed if this potential is to be realized.

scholarly journals Soil Amendments at Planting

1984 ◽  
Vol 2 (1) ◽  
pp. 27-30 ◽  
Author(s):  
W.L. Corley
Keyword(s):  
Drip Irrigation ◽  
Growth Response ◽  
Soil Amendments ◽  
Organic Amendments ◽  
Growth Responses

The growth response of 10 difficult to establish landscape shrubs and trees was evaluated in a series of 4 backfill experiments utilizing hole sizes, organic amendments, mulch, and/or drip irrigation. Growth responses varied among species, but no consistent, positive responses were derived from traditional backfill amendments.

scholarly journals Optimum combination of soil amendments under drip irrigation with different water sources in coastal areas of East China

2018 ◽  
Vol 16 (3) ◽  
pp. e1102
Author(s):  
Yahui Liu ◽  
Shumei Zhou ◽  
Jianping Sun ◽  
Xiuping Wang ◽  
Zaijian Yuan
Keyword(s):  
Soil Nutrients ◽  
Drip Irrigation ◽  
Soil Amendments ◽  
Soil Improvement ◽  
Optimum Combination ◽  
Test Method ◽  
Cow Dung ◽  
Soil Electrical Conductivity ◽  
Soil Potassium ◽  
Orthogonal Test Method

The effects of drip irrigation (DI) with fresh water (FW) and brackish water (BW) on saline-alkali soil improvement were compared under treatments of five amendment combinations. The experiment was designed using the orthogonal test method and performed using an indoor DI system. Soil electrical conductivity (EC), pH, sodium adsorption ratio and soil nutrients were analyzed after DI both before evaporation and after one month of evaporation. The results showed that after one month of evaporation, soil EC increased by an average of 97.26% and 27.76% for the FW and BW treatments, respectively. Furthermore, it was shown that soil nutrients increased greatly under the BW treatment and that cow dung proved to be a leading agent influencing soil nutrients except available soil potassium (p<0.05). Consequently, the optimum combination of soil amendments was determined as 0.03 m3/m2 of straw, 3 kg/m2 of phosphogypsum, 0.04 m3/m2 of cow dung, 0.6 kg/m2 of humic acid and 0.18 kg/m2 of microbial fertilizer under the BW treatment.

scholarly journals Short-Term Impact of Drip Irrigation Frequency on Soil Hydro-Physical Properties of an Alfisol and Performance of Two Maize Varieties

2020 ◽  
Vol 8 (8) ◽  
pp. 1675-1685
Author(s):  
Gabriel Oladele Awe ◽  
Busola Margret Ayuba ◽  
Japheth Umam ◽  
Toyin Peter Abegunrin
Keyword(s):  
Physical Properties ◽  
Bulk Density ◽  
Irrigation Water ◽  
Drip Irrigation ◽  
Yield Components ◽  
Irrigation Frequency ◽  
Short Term ◽  
Maize Varieties ◽  
Maize Variety ◽  
And Performance

Irrigation scheduling is important for efficient use of applied water and for maximizing crop yields. Therefore, the aim of this study was to evaluate the short-term effect of drip irrigation frequency on soil hydro-physical properties of an Alfisol and performance of two maize varieties, at the Teaching and Research Farm, Faculty of Agricultural Sciences, Ekiti State University, Ado Ekiti, Southwest Nigeria. The experiment was laid out using a split-plot experiment in randomized complete block design (RCBD) and three replications. Irrigation frequency constituted the main plot namely: irrigation four times a week (I4), irrigation thrice a week (I3), and irrigation twice a week (I2) of re-filling soil to field capacity while the subplot was maize variety namely: V1: SAMMAZ-27 and V2: OBA-super-6. Plant growth parameters and soil physical properties of soil water content (SWC), bulk density (BD) and saturated hydraulic conductivity (Ksat) were monitored during the growing cycle. Water use efficiency (WUE) and yield components were determined at maturity. There were significant interactions between irrigation regime and maize variety on SWC and Ksat. The maximum bulk density (BDmax) and optimum soil water content SWCopt were 1.41 g/cm3 and 0.12 g/g, respectively. Plant height (PH) did not differ between the two maize varieties throughout the growth cycle. Drip irrigation frequency did not significantly affect plant height until growth stage V12 (12 fully opened leaves), with I4 irrigation treatment having the tallest plant. Both drip irrigation and maize variety had no significant influence on both LAI and CC, neither was there any significant interaction effect. Increasing irrigation water increased maize yield and yield components. The treatment combination of I4V1 had the highest performance indices in terms of yield components. WUE decreased with increasing frequency of irrigation water application while the WUE of SAMMAZ-27 > OBA-super-6. Therefore, irrigating four times a week and SAMAZ-27 maize variety could be a suitable irrigation-variety combination for providing sustainable irrigation agriculture for maize in this region.

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