scholarly journals Inhibitory effects of commercial potassium chloride on the nitrification rates of added ammonium sulphate in an acid red yellow podzolic soil

1981 ◽  
Vol 59 (2) ◽  
pp. 364-364
Author(s):  
D. C. Golden ◽  
S. Sivasubramaniam ◽  
S. Sandanam ◽  
M. A. Wijedasa
Keyword(s):  
Potassium Chloride ◽  
Ammonium Sulphate ◽  
Podzolic Soil ◽  
Inhibitory Effects

Long-Term Effects of Fertilizers and Manure on Soil and Leaves of Cotton in Nigeria

1969 ◽  
Vol 5 (3) ◽  
pp. 241-247 ◽  
Author(s):  
B. W. Bache ◽  
R. G. Heathcote
Keyword(s):  
Potassium Chloride ◽  
Ammonium Sulphate ◽  
Chemical Properties ◽  
Exchange Capacity ◽  
Long Term Effects ◽  
Single Superphosphate ◽  
Exchangeable Ca ◽  
Chemical Properties Of Soils ◽  
Sudan Savanna ◽  
A Site

SummaryOn a site in the Sudan Savanna, chemical properties of soils (except for phosphate) and the composition of cotton leaves were determined after fifteen annual treatments including dung, ammonium sulphate, single superphosphate and potassium chloride, in all combinations of three levels. In the soils dung increased C, N, cation exchange capacity, exchangeable Ca and Mg and pH, and decreased soluble Al and Mn; ammonium sulphate decreased pH, increased soluble Al and Mn, and decreased exchangeable Ca and Mg; potassium chloride had no obvious effects. In the plants dung increased P and reduced Mn; ammonium sulphate reduced Ca and Mg, and increased Mn; superphosphate increased P, Ca and Mg, and reduced K; potassium chloride increased K slightly. The most important results were the ability of ammonium sulphate to acidify the soil, as shown by soil properties and reflected in tissue composition, and the ability of dung to ameliorate these effects. Reduction of crop yield in the presence of adequate nutrient supply seems to have been due to excessive soil acidity.

Experimental Investigation of Convective Cells Generated by Side Walls in Solar Ponds Using Various Salts

1997 ◽  
Vol 119 (4) ◽  
pp. 292-297 ◽  
Author(s):  
B. A. Jubran ◽  
J. A. Iweida ◽  
N. M. Haimour
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Sodium Chloride ◽  
Potassium Chloride ◽  
Ammonium Sulphate ◽  
Heated Wall ◽  
Solar Ponds ◽  
Different Types ◽  
Side Walls ◽  
Convective Cells

This paper reports an experimental investigation to study the effect of various parameters that might affect the generation of convective cells in solar ponds with sloping walls. The parameters studied include the variation of the angles of the walls, types of salt used, and the surface roughness of the sloping wall. Four angles were used: 90, 60, 45 and 30, as well as four different types of salts: sodium chloride, potassium chloride, ammonium Sulphate, and carnalite. It was found that increasing the sloping angle of the heated wall of the pond tends to decrease the activity of the convective cells. Furthermore, the growth rate of the convective cells is very much dependent on the type of salt. The results indicate that carnalite and ammonium sulphate tend to have low growth rates of convective cells compared with sodium chloride and potassium chloride. Finally, the surface roughness of the heated wall tends to reduce the activity of the convective cells.

The inhibitory effects of potassium chloride versus potassium silicate application on 137 Cs uptake by rice

2016 ◽  
Vol 153 ◽  
pp. 188-194 ◽  
Author(s):  
Shigeto Fujimura ◽  
Kunio Yoshioka ◽  
Takeshi Ota ◽  
Tetsuya Ishikawa ◽  
Makoto Sato ◽  
...  
Keyword(s):  
Potassium Chloride ◽  
Potassium Silicate ◽  
Inhibitory Effects

Studies on the effect of the nutrient status of sugar-cane on the fecundity of Saccharosydne saccharivora (Westw.) (Hom., Delphacidae)

1970 ◽  
Vol 60 (2) ◽  
pp. 309-325 ◽  
Author(s):  
J. R. Metcalfe
Keyword(s):  
Potassium Chloride ◽  
Nitrogen Content ◽  
Ammonium Sulphate ◽  
Sugar Cane ◽  
Egg Production ◽  
Adult Life ◽  
Nutrient Status ◽  
Leaf Nitrogen ◽  
Oviposition Period ◽  
Crop Cycle

An account is given of glasshouse experiments in Jamaica to determine the effects of agronomic practice on the fecundity of the sugar-cane pest Saccharosydne saccharivora (Westw.). Eggs (up to one egg per ovariole per day) develop throughout adult life. On young vigorous plant cane the pre-oviposition period was 5·3 days; egg production was highest during the first six days of the oviposition period and declined markedly after 12 days. Mean daily egg production per female over 12 days was taken as an index of fecundity.The effects of fertiliser application (ammonium sulphate and potassium chloride), wet and dry water regimes, variety (B41227, B42231 and B4362) and crop cycle (plant and ratoon cane), all at different stages of crop development, were observed in four series of experiments involving 1 000 female S. saccharivora. Potassium (K2O) and phosphorus (P2O5) per cent lamina dry matter varied comparatively little, but nitrogen content declined with the age of the plant, increased with application of ammonium sulphate, and was unaffected by crop cycle or variety. Egg production was highest on young cane (up to a mean of 12·0 eggs per female per day), but declined on older cane; it increased with the application of ammonium sulphate but was unaffected by potassium chloride. A direct linear correlation between egg production and the nitrogen content of the leaf (r2 = 0·69, 0·81, 0·52 and 0·69 in series I–IV, respectively) suggested a causal relationship. The pre-oviposition period lengthened and the proportion of females failing to lay any eggs increased in the absence of fertiliser and with increasing plant age. Variation in leaf nitrogen under field conditions could affect egg production.

scholarly journals The Response of Different Weed Species to Glyphosate Using Ammonium Sulfate and Hard Water

2019 ◽  
Vol 37 ◽  
Author(s):  
M. MIRZAEI ◽  
M. RASTGOO ◽  
K. HAJMOHAMMADNIA GHALIBAF ◽  
E. ZAND
Keyword(s):  
Ammonium Sulphate ◽  
Block Design ◽  
Water Hardness ◽  
Hard Water ◽  
Amaranthus Retroflexus ◽  
Inhibitory Effects ◽  
Weed Species ◽  
Kochia Scoparia ◽  
Spray Solution ◽  
Canary Grass

ABSTRACT: Water hardness antagonism and the effect of ammonium sulphate (AMS) on efficacy of glyphosate have been well documented. However conflicting results between weed species were noted by the authors. Greenhouse experiments were conducted twice at the Ferdowsi University of Mashhad in a randomized complete block design with a factorial arrangement and three replications during 2014-2015. Four experiments were arranged separately on cypress (Kochia scoparia), redroot pigweed (Amaranthus retroflexus), little seed canary grass (Phalaris minor) and winter wild oat (Avena ludoviciana) using ammonium sulphate and deionizad water and in the presence of different salts, (i.e. NaHCO3, CaCO3, MgCl2 and CaCl2 at 500 ppm) against three doses of glyphosate (256.25, 512.5 and 1,025 g a.i. ha-1), with and without ammonium sulphate (AMS) as adjuvant (2% w/v). The results showed the application of AMS overcomes the inhibitory effects of salts in the spray solution in tested species. The degree of effectiveness in A. retroflexus was more than A. ludoviciana and P. minor. Glyphosate with AMS caused reduction in dry matter in grasses from 0.34 to 0.28 g, while glyphosate toxicity in A. retroflexus with AMS was 100 percent and all of the plants were destroyed (0.82 to 0 g). The application of AMS in overcoming the inhibitory effects of water hardness had no effect on K. scoparia control. However, Increasing AMS could overcome the inhibitory effects of hard water in the spray solution on glyphosate efficacy in A. retroflexus and K. scoparia, but it had no effect on tested grassy weeds. We may conclude that glyphosate work differently on weed species using AMS and hard water.

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