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Image 4 of Kentucky fruit notes, vol. 2, No. 4, July 1943

Part of Kentucky Agricultural Experiment Station

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l l ` i than the plots where 2 tons were ap- There they do a good job of early plied. This adds further evidence winter mulching and also use 2 to 3 . that over-wintering mulch in the lat- tons or more per acre. j itude of Western Kentucky should j be heavy enough to give reasonable , protCection,_tl;>1u§1not toobheavy.tFor A CASE OF BORON t win ers wi eavy su -zero em- · peratures, the heavier mulches DEFICIENCY IN WESTERN . } would likely be justified, as in KENTUCKY ; 1939"‘*°· vv. D. Aruvrsraono i Commercial 0bB€l‘V3ll0HS Considerable mention has been { E made in several sections of the % Over the whole Paducah`E€nt0n` United States regarding boron de- Z Mayfield Secmm many ulsbyear ficienc s m toms ina les To date V ( i strawberry fields were not mulched H main? gf this wggk has been § early, chiefly because provisions had done Jin $(3 East in the Far West 1 not been made for straw. The rainy and to Some cxteht in the Midwest g l Weather in November and D€C€m` Ordinaril soils contain enou li I b€"· and Subsequent f“’°?€$ md boron oneyof the minor rare ei- is ' u‘aWS· made Straw hauung and ments, that is needed onl in small = l Spreading during winter Very dim` uantities for satisfactory tree and O ( cult' Straw was Scarce and Sold llruit growth It has been fydund how- ` { from $12 t° $15 per mu MOFQOVEXY ever that when boron is lacking in l i Some growers are not yet convinced the soil the fruits of the a le often ’ 4 ¤f the Med f¤¤‘ early wma mulch- become bum have nna»£‘§i brown l = ing and others do not mulch for fear areas and Egiemal and external of the great amount of wheat and Cork Spots The surface Of such V Cheat that Often comes up when fruit; is also often badly russeted poorly thljeshed Straw IS used for with an external corky area that · mulch. This last object1_on can be got- Often cracks AS for the tree twigs ten arpund by hauling Straw to are often caused to be rough, and a ` fields m October and St¤·¤k¤¤g m certain amount of dieback of twi s small piles or breaking bales so that ma be resent These Condmogs the fall rains will sprout the seeds ,,12,,% beer}? couécted by the addi_ b°f°r€ the suuw _1S Spr€au· tion of small quantities of boron in Over the district most unmulched the form of Borax or boric acid. first-year fields contained many Following the severe winter of . plants that showed internal brown- 1940, slight dieback was noticed in mg and root injury from the cold. Some Yellow Transparent trees on Also many plants failed to bloom the grounds of the Western Ken- and these started vigorous growth tucky Experiment Substation at and early runner formation. While Princeton. There was also noticed not as numerous as in Some Y€a¥`$· some slight disorder in the fruit on these are the _same so-called "he" certain of these trees. In 1941, this plants that fail to bloom because disorder of internal and external their fruit buds are injured by the cork of the fruit was more pro- cold. nounced on certain trees and in 1942, It is now thought that strawberry the fruit from some trees had so Prices will be good f01` S€V€·1‘81 YBHFS much internal cork and browning Bild B1‘0W€1`S BFG 111`g€d to USG all that their entire crop had to be dis- the best methods to get heavy yields. carded. The trouble was definitely While there is a chance to gain 40 identified as being typical of severe to 50 crates per acre of $5 to $8 boron deficiency. Experimental berries by getting the mulch to- treatments of these trees known to gether and applying it in mid-De- be suffering from boron deficiency, cember instead of delaying until were made this season but at this March, it seems like bad business time it is too early to check the re- not to get this done. sults. The above discussion refers en- It is suggested that others examine tirely to southern and western Ken- their fruit and if any of these symp- tucky, where mulching practices and tons are observed, to communicate times vary. In central and northern with the Horticulture Department of Kentucky growers have long since the Kentucky Experiment Station, as found they could not afford to tempt the extent of this trouble is not gen- fate by leaving fields unmulched. erally known. 4