Effect of early blight(Alternaria solani)and different nitrogen inputs on radiation interception, radiation use efficiency, and total dry matter production in potatoes(Solanum tuberosum)grown in Canterbury, New Zealand

Shah, S. F. A.; McKenzie, B. A.; Gaunt, R. E.; Marshall, John; Frampton, Chris

doi:10.1080/01140671.2004.9514305

Cited by 16 publications

(9 citation statements)

References 31 publications

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“…In line with this, the LCC in our study was significantly and linearly related to both TDMY and IPAR in both years with R 2 of 0.7 and 0.8 in 2017 and 0.5 and 0.8 in 2018 (Table ). This concurs with frequently reported positive effects of increased crop N uptake on dry matter yield and IPAR (Andersen et al, ; Shah, McKenzie, Gaunt, Marshall, & Frampton, ) and may also explain the increase of RUE by biochar amendment (Kuzyakov & Gavrichkova, ; Wohlfahrt, Pilloni, Hörtnagl, & Hammerle, ). The RUE only increased significantly in 2018.…”

Section: Discussionsupporting

confidence: 91%

Effect of rice straw biochar and irrigation on growth, dry matter yield and radiation‐use efficiency of maize grown on an Acrisol in Ghana

Danso

Yakubu

Arthur

et al. 2019

J Agronomy Crop Science

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In order to determine whether the current low productivity associated with rainfed cultivation on degraded soils in Ghana can be improved by biochar amendment and irrigation, field experiments with maize were conducted over two seasons in 2017 and 2018. Rice straw biochar at rates of 0 t/ha (B0), 15 t/ha (B15) and 30 t/ha (B30) was combined with irrigation regimes of full irrigation (I100), deficit irrigation (I60) and no irrigation (I0). The I100 treatment was irrigated to field capacity every 3–4 days according to time domain reflectometry measurements while the I60 treatment received 60% of the irrigation amount given to I100 but with the same irrigation frequency. The I0 treatment was not irrigated. In both seasons, the B30 treatment recorded the highest total dry matter yield (TDMY), intercepted photosynthetically active radiation (IPAR) and radiation‐use efficiency (RUE) and these were significantly (p ≤ .05) higher than B0 except for RUE in 2017. Irrigation regimes did not significantly affect TDMY, IPAR and RUE in 2017 but compared to I100, I0 significantly reduced TDMY, IPAR and RUE in the relatively dryer 2018 season. Measured ratio vegetation indices differentiated biochar treatments earlier in the 2018 season than during 2017 and increase of leaf chlorophyll content indices with biochar rate in both seasons indicated that biochar amendment improved nitrogen uptake. Our study demonstrated that rice straw biochar is capable of increasing TDMY, IPAR and RUE of maize grown on degraded soils in Ghana. The study further showed that TDMY, IPAR and RUE of deficit irrigated maize for two seasons were similar to the counterpart fully irrigated maize and may be a viable water management option for farmers in Ghana to save irrigation water resources.

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Section: Discussionsupporting

confidence: 91%

Effect of rice straw biochar and irrigation on growth, dry matter yield and radiation‐use efficiency of maize grown on an Acrisol in Ghana

Danso

Yakubu

Arthur

et al. 2019

J Agronomy Crop Science

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“…The highest gas exchange (P n and g s ) recorded in sorghum plants grown in strips between Acacia trees, can be attributed to the higher content of nitrogen in the soil, which positively affects the leaves nitrogen content. This finding is in line with Shah et al (2004) and Fletcher et al (2013).…”

Section: Discussionsupporting

confidence: 88%

Investigating the variations of soil fertility and Sorghum bicolor L. physiological performance under plantation of some Acacia species

Ahmed¹,

Aref²,

Alshahrani³

2020

PLANT SOIL ENVIRON

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Taking the importance of agricultural production sustainability with limited resources to use efficiency in an arid area, afield experiment was designed to investigate the effect of three, Acacia trees (Acacia nilotica, A. seyal, and A. tortilis) planting combination on soil fertility and Sorghum bicolor L. growth and physiological performance. The sorghum planted in 7 strips between 14 rows of Acacia trees planting combinations and one treeless strip as control. Acacia species plantations significantly increase soil fertility in terms of available nitrogen (N), phosphorus (P), potassium (K) and organic carbon (OC) contents as compared to control, highest level of N and P content (59.01 ± 1.45 and 58.77 ± 1.10 mg/kg) was reported in strip between rows of A. tortilis. Although the highest net photosynthesis rate (Pn) and stomatal conductance (gs) recorded in plants grown between rows of pure A. torilis, and rows of A. torilis–A. seyal, but different Acacia significantly enhanced sorghum growth and physiology with reference to net photosynthesis rate, stomatal conductance and chlorophyll fluorescence (chlF). The results stated linear relation between soil nutrients (N, P, K), Pn, and chlF increasing soil fertility improve physiological performance of sorghum. In conclusion, the three Acacia improve soil fertility and sorghum growth. Generally, this plantation trial can be environment-friendly alternative agricultural practices in Saudi Arabia or any area with a similar ecological condition to amend the soil and improve crop performance.

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“…For some, effects on RUE contribute to the response but do not predominate (Rabbinge et al , 1985), while for others, effects on RUE appear to be negligible (Van Oijen, 1990). However, there are also some reports of proportionately greater reductions in RUE compared with radiation interception (Shah et al , 2004). The overall impact of reductions in radiation interception and RUE on yield will depend on the effects of the pathogen on partitioning and on the source–sink relationships within the crop.…”

Section: Crop Yield Formation and Candidate Tolerance Traitsmentioning

confidence: 99%

Crop traits and the tolerance of wheat and barley to foliar disease

Bingham

Walters

Foulkes

et al. 2009

Annals of Applied Biology

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The relationship between yield loss and disease severity can differ widely between crops. This has given rise to the concept of disease tolerance, with some crops exhibiting a smaller yield loss under a given severity of disease than others. Genetic improvement to minimise yield loss under disease is an attractive goal, as it exerts little or no selection pressure on pathogen populations, and could form a useful component of durable disease management programmes. However, progress towards this end requires a thorough understanding of the phenotypic traits that influence the response of yield to disease, their genetic control and the possible trade-offs involved with other desirable agronomic characteristics. This paper examines the candidate crop traits that may confer tolerance of foliar disease in wheat and barley and reviews evidence of genetic variation in their expression. In wheat grown under the relatively low light conditions of North-West Europe, post-anthesis source (assimilate supply) and grain sink capacity (capacity for dry matter accumulation) appear to be closely balanced. Traits associated with maintaining post-anthesis radiation interception and radiation use efficiency in spite of disease may confer tolerance. The most promising traits include a larger flag leaf and compensatory increases in photosynthetic rate in non-infected parts of leaves. In barley, yield is often more strongly sink limited, and early-season disease management is required to protect the formation of potential grain sites. A wider range of potential traits may influence tolerance including compensatory adjustments in leaf growth and morphology, and differences in the sensitivity of tiller and spikelet mortality to photoassimilate supply. Different methods for quantifying tolerance are suggested depending on the trait of interest.

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Effect of early blight(Alternaria solani)and different nitrogen inputs on radiation interception, radiation use efficiency, and total dry matter production in potatoes(Solanum tuberosum)grown in Canterbury, New Zealand

Cited by 16 publications

References 31 publications

Effect of rice straw biochar and irrigation on growth, dry matter yield and radiation‐use efficiency of maize grown on an Acrisol in Ghana

Effect of rice straw biochar and irrigation on growth, dry matter yield and radiation‐use efficiency of maize grown on an Acrisol in Ghana

Investigating the variations of soil fertility and Sorghum bicolor L. physiological performance under plantation of some Acacia species

Crop traits and the tolerance of wheat and barley to foliar disease

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