Broadleaf break crops improve cereal yield through disease and weed control, increased nitrogen (N) availability other mechanisms. In the rainfed farming systems of Australia magnitude benefit is highly variable, yet a major driver for adoption which are often less profitable more risky than cereals. Declining area throughout has re-ignited interest in better understanding circumstances break-crop benefits can be maximised from perspective. We compiled analysed database 167 crop sequence...

Field trials were conducted in 2 seasons at 13 sites on neutral to alkaline soils Western Australia, compare the growth and seed yield of 6 winter grain legume species: field pea (Pisum sativum L.), chickpea (Cicer arietinum faba bean (Vicia lentil (Lens culinaris Medik), narrow leaf lupin (Lupinus angustifolius albus (L. albus). In a dry year (1991), overall site mean was highest for (1.35 t/ha), then (1.22 t/ha) (0.85 t/ha). Chickpea, line ILL5728, produced an average 0.64 t/ha. Rainfall...

In 24 experiments conducted across a range of agricultural environments in Western Australia between 2010 and 2014 canola (Brassica napus L.) grain yield response to crop density was adequately described by an asymptotic model (where approaches but never quite reaches ceiling at very high density) 101 out 112 individual responses; the other 11 reached maximum declined slightly higher densities. Seed oil more likely increase than decrease with increasing effect always small; less 1% over...

Australian canola growers have new technology options including hybrid and herbicide technologies, which offered yield profitability advantages in other canola-growing regions of the world. This study compared gross margins open-pollinated (OP) from different tolerance groups: triazine-tolerant, Roundup Ready, Clearfield conventional across a wide range environments south-western Australia, National Variety Trial network southern Australia to investigate relative these technologies. There...

Cropping has recently expanded into arable areas of the high rainfall zone (HRZ) Australia. We assessed suitability canola varieties winter, winter × spring and spring-maturity at six sites across south-eastern, northern western HRZ Australia for their dual-purpose production. Experiments measured potential forage production effect defoliation or grazing on grain yield crops sown from mid-March to mid-May. Overall, these experiments demonstrated a wide area HRZ. In south-eastern where...

During the last two decades in Western Australia, traditional mixed farming system has been increasingly displaced by intensive crop sequences dominated wheat. Intensive wheat are usually maintained using suitable breaks, including pasture, fallow, or alternative cereal, oilseed and legume crops, to control weeds disease, maintain supply of nitrogen crops. New cereal fungicide options may also assist systems suppressing soilborne diseases. To guide successful diversification systems, we...

Three cultivars of wheat were grown using five levels applied nitrogen (N) fertilizer at locations in the central wheatbelt Western Australia during 1986, 1987 and 1988. The Gamenya (old, tall), Gutha (new, tall) Aroona semidwarf). aim experiments was to determine if newer responded more N than older ones. At 10 out 15 sites there a yield increase N. semi-dwarf cultivar out-yielded two tall apd added 6 sites. average initial response these six 16, 18 31 kg grain per for Gamenya, Aroona....

A survey of experimental results relating crop management to grain yield was conducted for wheat and other crops on duplex non-duplex soils in the wheatbelt Western Australia. Increases due improved agronomic practices were almost as great soils. Early sowing more than soils, but response applied nitrogen variable, possibly related reduced efficiency uptake nitrogen. The advantage a semi-dwarf cultivar (Aroona) over tall (Garnenya) less (6%) (29%). optimum seed rate 27% greater both quality...

Winter cropping in Western Australia (WA) is dominated by spring-type cereals and canola (Brassica napus L.) with no vernalisation requirement that are sown late autumn (late April May). With limited earlier sowing opportunities for later maturing winter-type crops early autumn, farmers aiming to obtain some benefit from the grazing of (i.e. dual-purpose) must consider potential spring types autumn. The aim this study was develop guidelines WA will limit grain yield losses. In order...

The response of Vicia sativa (cvv. Languedoc, Blanchefleur and Morava) V. benghalensis (cv. Barloo) seed yield to seeding rate was examined in 9 field experiments across 2 years south-western Australia. There were types experiments: (20, 40, 60, 100 140 kg/ha) × cultivar (Languedoc, Blanchefleur, Morava or Barloo), time sowing (2 times either Languedoc Blanchefleur) (5,�7.5, 10, 15, 20, 30, 50, 75 kg/ha).A target density 40 plants/m2 gave 'optimum' vetch In high yielding situations, with a...

Western Australian grain production is dominated by wheat, but growing wheat continually in unbroken sequences leads to increasing problems with soil nutrient depletion, root and leaf disease build-up, high weed burdens, possibly other less well-defined constraints. These can adversely affect both quality. Including breaks the crop sequence form of break crops, pasture, or fallow reduce these problems, be expensive implement, terms direct cost forgone revenue. It therefore critical predict...

Canola (Brassica napus L.) is widely grown throughout all rainfall zones in south-western Australia. Yields are low by world standards, and variable low-rainfall (<350 mm annual rainfall) medium-rainfall (350–450 mm) zones, so that minimising production costs a major consideration for growers these areas. One of the input nitrogen (N) fertiliser. Fifteen N rate × application time canola plant-type experiments were conducted low- between 2012 2014. In most experiments, five rates tested,...

Chickpea has become an important grain legume crop in Australia over the last decade. New varieties with improved seed yield and quality are being developed varied phenological agronomic traits. This study examined optimum time of sowing several desi chickpea (Dooen, T1587, Sona Tyson) varying phenology a range dryland Mediterranean-type environments south-western Australia. showed good adaptation, particularly northern belt Western where growing conditions warmer than southern areas. Seed...

Context Dual-purpose wheat (Triticum aestivum L.) and canola (Brassica napus crops have been extensively researched for grazing in Australian farming systems, with a focus on by sheep. In some regions, dual-purpose grazed cattle, but there reports of animal health problems. Aims This paper sought to collate all known experiments conducted throughout Australia cattle crops, order evaluate management options that result high growth rates good outcomes. Methods There were six experiments. Expts...

The hypothesis that pod load on the main inflorescence of Lupins angustifolius (L.) is negatively coupled to amount dry matter partitioned into primary branches was tested. Growth rates stem and during period initiation were measured in a series field experiments at two different sites. Variation set generated experimentally by varying sowing date or density using four cultivars (Yandee, Danja, Gungurru Warrah). differed their total growth rate, but not way branches. In contrast, significant...

Six cultivars of canola (Brassica napus L.) were grown with six levels applied nitrogen (N) fertilizer (urea 46% N) at locations in south Western Australia (SWA) during 2010 and 2011. The aim the experiment was to determine if seed yield (SY) increase (response) associated herbicide technologies different N. Open pollinated (OP) hybrid (Triazine Tolerant, TT; Roundup Ready, RR; Clearfield, CL) used. Varieties had large SY differences no N applied. Generally, RR 2011 tended have highest SY,...

Four experiments were conducted during 1991-93 in the south coastal and lakes regions of Western Australia, to test hypothesis that foliar application a range growth regulators will improve pod set seed yield narrow-leafed lupins (Lupinus angustifolius L.). The chemicals tested (not all any 1 year) were: Cultar (250 g paclobutrazol/L), Pursuit (240 imazethapyr/L), Cytokinin (21 6-benzyladenine/L), Legumex (400 2,4-DB/L), Cytolin (20 gibberellins A4 A7/L 20 Bladex (500 cyanizine/L), Diuron...