Impact of potassium rates and their application time on dry matter partitioning, biomass and harvest index of maize (&lt;i&gt;Zea mays&lt;/i&gt;) with and without cattle dung application

Amanullah, Amanullah; Iqbal, Asif; Iqbal, Muhammad

doi:10.9755/ejfa.2015.04.042

Cited by 30 publications

(13 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6B). Potato (Khan et al, 2012), ginger (Haque et al, 2007), and other crops fertilized with an optimized combination of K 2 SO 4 and KCl can not only promote the synthesis of crop proteins, starch, and chlorophyll, but also improve their capacities for photosynthesis and stress resistance, to ultimately improve crop yields and quality (Iqbai et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Responses of Garlic Quality and Yields to Various Types and Rates of Potassium Fertilizer Applications

Wang

Chu

et al. 2022

horts

View full text Add to dashboard Cite

Potassium (K) is a critical plant nutrient that determines quality in a myriad of crops and increases production yields. However, excessive application of various types of K fertilizers can decrease both the food quality and yields, which translates as economic losses and food safety issues. The objectives of this study were to 1) elucidate the impacts of different application rates of various K fertilizers on garlic, with the aim to identify the optimal and most economical K fertilizer dosage and 2) compare the effects of applying two common K fertilizers (KCl and K2SO4) on garlic, to determine the optimal combination. From 2018 to 2020, we utilized two distinct K-fertilized fields to conduct our experiments. The results revealed optimal KCl fertilization increased the biomass and vegetation index in garlic, and promoted the transfer of nitrogen, phosphorus, and potassium nutrients from the stem and leaf to bulb, thereby increasing bulb production. The application of KCl fertilizer increased the number of cloves, the diameters of the cloves and bulbs, and reduced variations in bulb size. In addition, the application of KCl fertilizer improved the nutritional quality (Vitamin C, soluble sugar, soluble protein, and allicin) of the garlic and reduced the accumulation of nitrate. However, excessive KCl fertilizer cause decreased yields, appearance traits, and nutritional quality. Applying the same rate of K fertilizer in the form of K2SO4 in isolation increased the garlic yield by only 0.1% to 22.5% when compared with KCl fertilizer. However, the results were not always significant. In this study, the highest yields, appearance traits, and nutritional quality were achieved with the ratio of K2SO4: KCl = 3:1. Consequently, to ensure the highest economic value (considering the market prices of K fertilizer, garlic sprouts, and bulbs), the authors recommend a K fertilizer rate of 252.5 kg·ha−1 K2O, with K2SO4 accounting for 61.6% for garlic production in field.

show abstract

Section: Discussionmentioning

confidence: 99%

Responses of Garlic Quality and Yields to Various Types and Rates of Potassium Fertilizer Applications

Wang

Chu

et al. 2022

horts

View full text Add to dashboard Cite

show abstract

“…The higher number of HI (38.11%) was obtained from 25% (83, 333 plants /ha) soybean population than 50% and 75% soy bean populations (Gutu et al, 2015). Nutrients: Application of potassium (K) at the highest rate (90 kg ha -1 ) increased Harvest index (0.39) due higher K level was attributed to the more dry matter partitioning into the reproductive parts (ears) of maize (Amanullah et al,2015). Ayaz (2001) reported nitrogen increased total dry matter (TDM) yield and seed yield, but the proportion of TDM was higher than seed following application of N to legumes.…”

Section: Environmental Variationmentioning

confidence: 99%

The Role of Harvest Index in Improving Crop Productivity: A Review

2019

JNSR

View full text Add to dashboard Cite

Harvest index (HI) is a measure of success in partitioning assimilated photosynthate. An improvement of crop harvest index means an increase in the economic portion of the crops in certain level. HI is a novel trait which contributed significant role in improvement of crop productivity which could solve the problem of food supplies for the rapidly increasing population. The objective of this paper was to review the role and progress of HI in improving crop productivity. Although crop HI influenced by both environmental and genetic factors, the progress improvement of HI and yield through crop management technique and breeding method strategy is an anticipative. In addition, the knowledge of genetic mode of expression of HI provides information for breeder to determine next breeding method.

show abstract

“…However, reduced LAI, photosynthetic capacity, and biomass accumulation of maize plants in T0 and T1 decreased the seed number and seed weight (Zhan et al, 2016). Under optimum K application increased the HI of maize, and this might be attributed to the decreased dry matter of vegetative parts as compared to the dry matter of reproductive parts (Amanullah et al, 2015).…”

Section: Potassium Seed Yield and Yield Componentsmentioning

confidence: 95%

Physiological and nutritional significance of potassium application under sole and intercropped maize (<em>Zea mays</em> L.)

et al. 2021

View full text Add to dashboard Cite

Highlights - Potassium nutrient management in maize-soybean strip intercropping can increase the resource use efficiency. - Compared to the T0 (no potassium), T2 (80 kg ha–1 on maize) application increases the light interception and leaf area index of maize by 17% and 38% respectively. - Regression analysis reveals a positive relationship between physiological parameters measured at R2 and at R6 growth stages in maize under maize-soybean strip intercropping. - High K2O (80 kg ha–1) inputs enhanced the partitioning of biomass production in maize. - Overall, the optimum K2O application increased the maize yield by 16% under maize-soybean strip intercropping system relative to control. Globally, maize is an essential food and fodder crop. Fertilisers, as soil amendments, particularly K2O, could increase maize yields. A Two-year field research was designed in 2018- 2019 to examine the influence of three-potassium fertiliser applications on maize-soybean strip intercropping and sole-maize yield components. A Randomized complete block design with three replications was used, and one of three K2O doses (T0, 0; T1, 40:30; T2, 80:60 kg ha–1) was given in each plot. The effects K2O treatments on photosynthetic characteristics, photosynthetic active radiation, leaf area index, total biomass accumulation, and seed yield were investigated at V6, R2, R4, and R6. Compared to T0, maize-soybean strip intercropping system and sole-maize results showed T2 maize enhanced the light interception by 14, 26, 15, and 17% at V6, R2, R4, and R6 respectively. Maize increased the partitioning of biomass to cob and seed by 8 and 10% at R6, respectively in T2, relative to T0 treatment. T2 showed a higher green leaf area than T0; K2O applications led to an enhancement in leaf area index at R6 by 38%, under T2, and subsequently increased the photosynthetic rate at R4 and R6 by 8% and 6% respectively, in both years of the study. These results suggest that we may increase the accumulation of biomass and the yield of the maize seed under maize-soybean strip intercropping system and sole-maize by optimum K application in maize plants.

show abstract

Impact of potassium rates and their application time on dry matter partitioning, biomass and harvest index of maize (<i>Zea mays</i>) with and without cattle dung application

Cited by 30 publications

References 16 publications

Responses of Garlic Quality and Yields to Various Types and Rates of Potassium Fertilizer Applications

Responses of Garlic Quality and Yields to Various Types and Rates of Potassium Fertilizer Applications

The Role of Harvest Index in Improving Crop Productivity: A Review

Physiological and nutritional significance of potassium application under sole and intercropped maize (<em>Zea mays</em> L.)

Contact Info

Product

Resources

About