Har­vest re­search

The Weekly Advertiser Horsham - - Ag Life - BY JEMMA PEARL BIRCHIP CROP­PING GROUP

While Birchip Crop­ping Group plot har­vesters are mak­ing their way around var­i­ous re­search sites in the Mallee, har­vest of a dif­fer­ent kind is also oc­cur­ring in the Wim­mera.

2Q 2FWREHU WKH ¿UVW PDWXULW\ FXWV ± D PHWK od of tak­ing a small quadrat sam­ple of a ma­ture crop – were col­lected from par­tic­u­lar plots as part of the Grains Re­search De­vel­op­ment CorSRUDWLRQ 2SWLPLVLQJ &DQROD 3UR¿WDELOLW\ SURMHFW at Lon­gerenong.

$ ZHHN ODWHU WKH KHDGHU KDUYHVWHG %&*¶V ¿UVW trial at Kinnab­ulla in the south­ern Mallee.

Ma­tu­rity cuts started in the Wim­mera early be­cause some of the plots were ripe.

This early ma­tu­rity is a re­sult of some of the eight va­ri­eties, two sow­ing dates and two ni­troJHQ DSSOLFDWLRQ WLPLQJV IDYRXULQJ DQ HDUO\ ¿QLVK Re­main­ing plots will ma­ture at later dates. To get the most out of th­ese tri­als, yield in­for­ma­tion needs to be col­lected at the ma­tu­rity of var­i­ous ma­tu­ri­ties.

,I WKH ZKROH WULDO ZDV OHIW XQWLO DOO WKH ¿QDO treat­ment ma­tured, the re­sult­ing yields would EHQH¿W ORQJHU VHDVRQ YDULHWLHV

Col­lect­ing ma­tu­rity cuts also al­lows re­searchers to col­lect the whole plant, mean­ing not only are yields col­lected, but a har­vest in­dex – the ra­tio between grain and dry mat­ter pro­duced – is recorded as well.

+DUYHVW LQGH[ LV WKH UDWLR RI VWUDZ WR JUDLQ ,W pro­vides an un­der­stand­ing of the re­pro­duc­tive HI¿FLHQF\ RI WKH SODQW RU KRZ ZHOO LW WXUQV JUHHQ leaf mat­ter into grain.

7KHUH DUH PDQ\ IDFWRUV WKDW LQÀXHQFH KDUYHVW in­dex, in­clud­ing the en­ergy and pro­tein con­tent of seeds, long-term breed­ing achieve­ments, ex­treme tem­per­a­tures, de­layed sow­ing and more.

De­layed sow­ing short­ens the length of the veg­e­ta­tive phase, re­sult­ing in less plant mat­ter to grain as a ra­tio, and there­fore har­vest in­dex would be higher.

Most im­por­tantly for the grower, yield data is col­lected to as­sess canola va­ri­eties and man­age­ment strate­gies.

Two other tri­als in the Wim­mera from which ma­tu­rity cuts were taken are the GRDC De­vel­op­ment of Crop Man­age­ment Pack­ages for Early Sown, Slow De­vel­op­ing Wheats in the South­ern Re­gion and the GRDC Na­tional Frost Ini­tia­tive.

For more in­for­ma­tion on the BCG Wim­mera re­search pro­gram stay tuned to this col­umn. AlWHUQDWLYHO\ SKRQH WKH %&* RI¿FH RQ

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