Interactions between applications of gypsum and zinc sulphate on the yield and chemical composition of rice grown on an alkali soil

1987 ◽  
Vol 108 (2) ◽  
pp. 275-279 ◽  
Author(s):  
M. V. Singh ◽  
R. Chhabra ◽  
I. P. Abrol
Keyword(s):  
Chemical Composition ◽  
Zinc Sulphate ◽  
Growth Yield ◽  
Yield Response ◽  
Alkali Soils ◽  
Alkali Soil ◽  
Zn Concentration ◽  
Optimum Response ◽  
Low Levels ◽  
Extractable Zn

SummaryA field experiment on an alkali soil (ESP 94) studied the effect of gypsum applied at 0, 2·5, 5 and 10t/ha and zinc sulphate applied at 0, 10, 20, 30 and 40 kg/ha on the growth, yield and chemical composition of rice. The effects of gypsum and zinc applications were additive. Optimum response of rice was to 10 kg zinc sulphate/ha at the 5 and 10 t/ha gypsum levels. At low levels of gypsum, plant growth was poor owing to toxicity of Na and/or deficiency of Ca, and higher levels of zinc sulphate gave a yield response. Zinc-deficient plants had significantly lower Zn concentration but higher concentrations of Fe, Mn, Cu, Ca and Mg than the healthy plants. Application of gypsum decreased the concentration of Na, Fe and Zn in rice plants and increased the concentration of Ca, K, Mn and Cu. in plots not treated with gypsum, the Zn concentration of plants was higher but grain yield was lower than that of gypsum-treated plots. Application of zinc increased the DTPA-extractable Zn but gypsum decreased the soil sodicity and DTPA-extractable Zn in alkali soils.

scholarly journals Postbloom Humic- and Fulvic-based Zinc Sprays Can Improve Apple Zinc Nutrition

HortScience ◽  
2005 ◽  
Vol 40 (1) ◽  
pp. 205-208 ◽  
Author(s):  
G.H. Neilsen ◽  
E.J. Hogue ◽  
D. Neilsen ◽  
P. Bowen
Keyword(s):  
Zinc Sulphate ◽  
Yield Response ◽  
Short Term ◽  
Growing Seasons ◽  
Zn Uptake ◽  
Zn Nutrition ◽  
Zn Concentration ◽  
Zinc Nutrition ◽  
Zn Status ◽  
Treated Apple

Zinc supplied as a fulvic-based Zn compound was absorbed and retranslocated to unsprayed new growth as effectively as zinc sulphate in apple seedlings of low Zn status grown hydroponically in the greenhouse. Similarly, fulvic- and humic-based compounds were as effective as zinc sulphate at improving short-term growth and Zn uptake into new tissues in Zn-deficient apple seedlings, with the best growth occurring at spray concentrations of Zn at 500 mg·L-1. Under field conditions, Zn concentration of peeled and washed `Jonagold' apples at harvest was increased, without phytotoxicity, by two or four postbloom sprays of fulvic Zn. It is therefore possible to use this material safely as an effective Zn-source after bloom. However the mobility of the foliar-applied Zn is limited and any yield response by treated apple orchards of marginal Zn nutrition is unlikely to occur in the short term (within two growing seasons).

scholarly journals Effect of Irrigation on Growth, Yield, and Chemical Composition of Two Green Bean Cultivars

Horticulturae ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 3 ◽  
Author(s):  
Said Saleh ◽  
Guangmin Liu ◽  
Mingchi Liu ◽  
Yanhai Ji ◽  
Hongju He ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Growth Yield ◽  
Green Bean

RELATIVE EFFICIENCY OF FERTILIZER N AND SOIL NITRATE AT VARIOUS DEPTHS FOR THE PRODUCTION OF SOFT WHITE WHEAT

1989 ◽  
Vol 69 (4) ◽  
pp. 867-874 ◽  
Author(s):  
J. M. CAREFOOT ◽  
T. ENTZ ◽  
J. B. BOLE
Keyword(s):  
Interactive Effect ◽  
Soil Layer ◽  
Yield Response ◽  
Soil Nitrate ◽  
Fertilizer N ◽  
Marginal Rate ◽  
Fertilizer Nitrogen ◽  
White Wheat ◽  
Wide Range ◽  
Low Levels

Soft white wheat was grown on a clay loam soil for 2 yr with a wide range of soil nitrate (SN) (70–280 kg ha−1) and fertilizer nitrogen (FN) (0–400 kg ha−1) treatments The field experiment was designed to determine the slopes of the yield response curves to FN (δy/δFN) and to SN (δy/δSN), to determine how the ratio of (δy/δSN)/(δy/δFN), or marginal rate of substitution, is affected by FN, SN, and depth of SN and to determine if refinements to the current FN recommendations for irrigated soft white wheat are required. The δy/δFN values in both years were high at low levels of FN and SN but declined as FN and SN increased. The δy/δSN in 1985 when most SN was situated in the 0- to 30-cm soil layer was initially high (26.0) at low levels of SN but rapidly declined as SN increased. The δy/δSN in 1986, when most SN was situated in the 30- to 120-cm soil layer, was intially low (6.0) but increased as SN increased. Since the δy/δFN and δy/δSN values were sensitive to changes in FN and SN as well as the depth of SN the MRS values were variable in both years. The δy/δSN increased as SN increased when SN was situated in the 30- to 120-cm soil layer so there was only a small effect of depth of SN on FN recommendations. The FN at maximum profit occurred at a greater combined amount of SN and FN for the higher SN levels in both years. This preliminary field study suggested that fertilizer N recommendations could be improved by using an equation for predicting FN that considers a variable yield response to FN and SN, an interactive effect of FN and SN on yield, and an effect of depth of SN on yield. Key words: Soil nitrate, fertilizer nitrogen, soft white wheat, soil test N

Growth, yield and chemical composition of different oilseed crops as influenced by sodicity

1988 ◽  
Vol 111 (3) ◽  
pp. 459-463 ◽  
Author(s):  
K. N. Singh ◽  
D. K. Sharma ◽  
R. K. Chillar
Keyword(s):  
Chemical Composition ◽  
Brassica Campestris ◽  
Growth Yield ◽  
The Other ◽  
Exchangeable Sodium ◽  
Sodic Soil ◽  
Oilseed Crops ◽  
Brown Sarson ◽  
Mn Concentrations ◽  
Number Of Branches

SummaryAn experiment was conducted during the rabi seasons of 1980–1 and 1981–2 to study the effect of exchangeable sodium percentage (ESP) of 87, 62, 44, 34 and 27 on growth, yield and chemical composition of toria (Brassica campestris var. Toria), raya (Brassica juncea L.) rapeseed (Brassica campestris var. Brown Sarson) and taramira (Eruca saliva). Number of branches per plant, number of siliquae per plant and seed yield of these crops were highest at 27 ESP. Increasing ESP decreased N, P, K, Ca, Mg, Fe, Zn, Cu and Mn concentrations and decreased that of Na in seed and stover. These crops can be grown successfully up to about 44 ESP without significant reduction in yield. Raya and rapeseed produced higher yields than the other oilseed crops on sodic soil.

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