Abstract
Grain yield responses of the navy bean (Phaseolus vulgavis L. cv. Actolac) to 4 row widths (17.8, 35.6, 71.1 and 107.0 cm) and 2 plant population densities (112 500 and 337 500 plants/ha) were investigated in 7 trials. The trials were at 4 locations over 3 years during the summer in southern Queensland and winter in northern Queensland. Detailed yield components and growth measurements were made at 4 locations in 1 year. The established populations at harvest were lower than expected, especially at high populations and at maximum row widths. Grain yields increased with population with a mean response of 19.1% over all sites, and responded negatively in a variable and complex manner to row width with a mean response of 46.5% for the narrowest over the widest row spacing. Grain yields were mainly determined by pod numbers, which in turn were causally related to estimated ground cover between flowering and the middle of pod-filling and hence to total vegetative yield.
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Claims 6
Claim · model-written summary
Established populations were below expectation, especially at high population and widest rows.
Verbatim
e0“The established populations at harvest were lower than expected, especially at high populations and at maximum row widths”
t0“navy beans”
Claim · model-written summary
Grain yield rose with population by a mean 19.1%.
Not reportedComparator
Verbatim
e0“Grain yields increased with population with a mean response of 19.1% over all sites”
t0“navy beans”
Claim · model-written summary
Narrowest rows yielded 46.5% more than widest rows on average.
Verbatim
e0“responded negatively in a variable and complex manner to row width with a mean response of 46.5% for the narrowest over the widest row spacing”
t0“navy beans”
Claim · model-written summary
Pod numbers mainly determined grain yields.
Not reportedDirection
Verbatim
e0“Grain yields were mainly determined by pod numbers”
t0“navy beans”
Claim · model-written summary
Pod numbers were causally related to ground cover between flowering and mid pod filling.
Verbatim
e0“pod numbers, which in turn were causally related to estimated ground cover between flowering and the middle of pod-filling”
t0“navy beans”
Claim · model-written summary
Ground cover was linked to total vegetative yield.
Not reportedDirection
Verbatim
e0“estimated ground cover between flowering and the middle of pod-filling and hence to total vegetative yield”
t0“navy beans”